Bicentennial (Produced in 1976) table and chairs

A surprise gift from an old (now dead ) godmother. I am curious about where it was made, or if there are other like it. We (my big family - with 5 kids) have used it (pretty hard) for years as a game table, seems very sturdy. Wondering if we should try restoring some of it's missing pieces - like the chair supports...or not.